Abstract: A thermoplastic resin composition is disclosed, which comprizes 5-55 weight % of a copolymer (A) whose glass transition temperature is not more than 0.degree. C., and 95-45 weight % of a high .alpha.-methylstyrene-content ABS resin (B) and/or a maleimide-type ABS resin (C), both (B) and (C) being not less than 100.degree. C. in thermal deformation temperature (load 18.6 kg/cm.sup.2), and said resin composition being not less than 10 kg.cm/cm in Izod impact strength (23.degree. C.). The resin composition provides molded articles less deformable at high temperatures, low in impact-induced stress, i.e, high in impact energy absorptivity, and thus is suitable for trim parts for use in interior decoration of automobiles.